Missy + Phyrexian Altar + Horde Ambusher

Prerequisites

• You have at least one red card in hand.

Steps

1. 1Activate Phyrexian Altar by sacrificing Horde Ambusher, adding one mana of any color.
2. 2When Horde Ambusher dies, Missy's first ability triggers, returning Horde Ambusher from your graveyard to the battlefield face down as a 2/2 Cyberman artifact creature.
3. 3Activate Horde Ambusher's morph ability by revealing a red card from your hand, turning it face up.
4. 4Repeat.

Effects

• Infinite colored mana
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers